# factor

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Related to Transforming growth factor: Fibroblast growth factor, Transforming growth factor alpha

## factor,

in arithmetic, any number that divides a given number evenly, i.e., without any remainder. The factors of 12 are 1, 2, 3, 4, 6, and 12. Similarly in algebra, any one of the algebraic expressions multiplied by another to form a product is a factor of that product, e.g., a+b and ab are factors of a2b 2, since (a+b)(ab)=a2b2. In general, if r is a rootroot,
in mathematics, number or quantity r for which an equation f(r)=0 holds true, where f is some function. If f is a polynomial, r is called a root of f; for example, r=3 and r
of a polynomialpolynomial,
mathematical expression which is a finite sum, each term being a constant times a product of one or more variables raised to powers. With only one variable the general form of a polynomial is a0xn+a1x
equation f(x)=0, then (xr) is a factor of the polynomial f(x).

## factor

[′fak·tər]
(mathematics)
For an integer n, any integer which gives n when multiplied by another integer.
For a polynomial p, any polynomial which gives p when multiplied by another polynomial.
For a graph G, a spanning subgraph of G with at least one edge.
(statistics)
A quantity or a variable being studied in an experiment as a possible cause of variation.

## factor

1. Maths
a. one of two or more integers or polynomials whose product is a given integer or polynomial
b. an integer or polynomial that can be exactly divided into another integer or polynomial
2. Med any of several substances that participate in the clotting of blood
3. Law, Commerce a person who acts on another's behalf, esp one who transacts business for another
4. former name for a gene
5. Commercial law a person to whom goods are consigned for sale and who is paid a factorage
6. (in Scotland) the manager of an estate

## factor

A quantity which is multiplied by another quantity.

## factor

A number that divides evenly into another number. For example, 3 and 4 are factors of 12. See factorial and IFP.
References in periodicals archive ?
There is a key function of Transforming Growth Factor Beta 1 in repair of wounds; it is a strong chemotactic factor for fibroblasts and activates them to produce main extracellular matrix components like collagen.
Transforming growth factor alpha (TGF-alpha) and other targets of tumor necrosis factor-alpha converting enzyme (TACE) in murine polycystic kidney disease.
Oral clefts, transforming growth factor alpha gene variants, and maternal smoking: a population-based case-control study in Denmark, 1991-1994.
Transforming growth factor has been identified as a contributor to pathologic scarring.
Collagen and fibronectin synthesis are initiated by transforming growth factor (TGF-B) and platelet-derived growth factor (PDGF) together stimulate fibroblasts to produce glycosoaminoglycans (GAG) and effect the proliferation of smooth muscle cells.
Increased transforming growth factor beta expression inhibits cell proliferation in vitro, yet increases tumorigenicity and tumor growth of Meth a sarcoma cells.
EGFR indicates epithelial growth factor receptor; TGF-[Alpha], transforming growth factor [Alpha]; NLs, normal pancreatic tissue specimens; MTs, mucinous cystic tumors; CPs, chronic pancreatitis specimens; and CAs, primary pancreatic ductal adenocarcinomas.
Effect of transforming growth factor (TGF)-bd1 on IgA isotype expression.
BetaKine is an engineered match for human TGF beta-2 (or transforming growth factor beta-2)--a member of the cytokine family.
When they treated these cells with a naturally occuring substance called transforming growth factor beta (TGFB), the lab cells behaved much like skin cells of people with scleroderma by overproducing connective tissue.

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